Event Title

Preferential Storm Pathways and Mountain Precipitation Over the Intermountain West

Presenter Information

Matt Jeglum
Jim Steenburgh

Location

Eccles Conference Center

Event Website

http://water.usu.edu/

Start Date

4-2-2009 10:15 AM

End Date

4-2-2009 10:20 AM

Description

A complex set of factors affects storm evolution and precipitation patterns over the lntermountain West. Situated in the mid-latitudes east of the Sierra Nevada, the region's complex topography strongly affects both the migration of storm systems and the precipitation patterns they produce. This study examines the relationship between storm track and precipitation over the lntermountain West. Storm pathways at 850, 700 and 500 mb are identified using the 6-hourly, 1.5 degree ECMWF ERA-lnterim reanalysis dataset. NRCS SNOTEL station precipitation data provide montane precipitation data over the lntermountain West. Primarily used for water-supply forecasting, SNOTEL stations provide daily precipitation measurements throughout the Western United States. Precipitation patterns associated with different synoptic patterns such as open-wave troughs, closed lows, or Nevada Cyclones will be identified. ln addition, precipitation climatologies for specific locations and ranges will be described.

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Apr 2nd, 10:15 AM Apr 2nd, 10:20 AM

Preferential Storm Pathways and Mountain Precipitation Over the Intermountain West

Eccles Conference Center

A complex set of factors affects storm evolution and precipitation patterns over the lntermountain West. Situated in the mid-latitudes east of the Sierra Nevada, the region's complex topography strongly affects both the migration of storm systems and the precipitation patterns they produce. This study examines the relationship between storm track and precipitation over the lntermountain West. Storm pathways at 850, 700 and 500 mb are identified using the 6-hourly, 1.5 degree ECMWF ERA-lnterim reanalysis dataset. NRCS SNOTEL station precipitation data provide montane precipitation data over the lntermountain West. Primarily used for water-supply forecasting, SNOTEL stations provide daily precipitation measurements throughout the Western United States. Precipitation patterns associated with different synoptic patterns such as open-wave troughs, closed lows, or Nevada Cyclones will be identified. ln addition, precipitation climatologies for specific locations and ranges will be described.

https://digitalcommons.usu.edu/runoff/2009/AllPosters/10